코테준비 - Add Two Numbers

Add Two Numbers

class Solution {
public:
    ListNode* addTwoNumbers(ListNode* l1, ListNode* l2) {
        ListNode *resultCursor = new ListNode;
        ListNode* result = resultCursor;
        int carry = 0;
        while (l1 != NULL || l2 != NULL || carry!=0)
        {
            int x,y;
            if(l1){
                x = l1->val;
                l1= l1->next;
            }else{
                x=0;
            }
            if(l2){
                y = l2->val;
                l2 = l2->next;
            }else{
                y=0;
            }

            int result = x + y + carry;
            carry = result / 10;
            resultCursor->next = new ListNode(result%10);
            resultCursor = resultCursor->next;
        }
        return result->next;
    }
};